Sewing-machine.



K. VON KORYTYNSKI.

SEWING MACHINE APPLIGATION FILED 11110.26, 11111.

8 Patented 016,1913. 1 0 1 841 l 45 on the spindle '16.

'rim Wi Losheim.

Speeilca'tion of Leiters Patent. Application :leii ecember 2G, 19M.

iidieniied. Mee. M5, MMS?. smal no. esima.

To all whom t may concern.'

Be it known that I, Komm) vor; ifcmif' TYNSIU, n .subject oi' the lihnperor oi dln;- trin-ifinngnry, und i'sfsiciingjgA nl; 27 "ehinbrnnnerslirussie, Vienna, V, fiiinfsiriiL-ihlngory, engineer, inw@ invented eerhiin new und useful [niprfn'enienh1l in :Sewingdii'nw chinas, oi which die ;ifoiio\ving gI is :l :speeiiicntion. i

This invenzim'i relates to Sewing 11mchines, ond has for its object :in iznyiroved sewing machine, the 11min feature oi which is that the drums, crank disks: or other members; actuating (he iooper :nid ihe miie up move' uniformly und with the suine angular velocity, und the defects of previous e01r 'irnrlions7 in which stiloi'les :1re missed, are eliminated. This improved construction is specially'adapted ifor rapid Working' since the nni'nvoiadde seizing und Wearing conditions are avoided which oeenr in machines with n Veiooity inizio oiher hun 1 :L between 'the marin spindle :ind the iooper, while, at the smile time lhe iri'eigy'nhwiifieifr in the formation of the Stiiehes-end jerks Causing the threads to he torn ure priwented.

My invention provides an improved driv" ing means for the toire up, by which tho latter is positively held ai; rer-i,- dniiidg the instant at which the nniformiy rohding md ioop, herebyvv iooper engages the Chr eliminating che defects of oxistine' el'nin,i'iu tions, in which stiiehes nre missed by [nii-- ure of the point of the iooper to properly e11- gzlge the irregularly moving ripper ihz'ezld.

In the accompanying drawings .oriningl a part of this nppiiention, und in which Similar reference syinboihKindiefde roi-responding poi-tri in the Seven-:i1 .'ie\vs:--I `igg; ure, l is n veriiezd aeetion, with pnl-fzs En'ohen away, illustrating one enihodinient oi my invention; und iig. E2 is im enhu'gijed i 'une Verse section through Lhe heard oi the cosine shown in Fig i.

Referring to the Crow/rhigh1 l; the drivinglr spindie of n Sewing which is eonnee'red with lfho npindie 17 0i' a iooper 17a by n sprocket `:hein E20 engaging sprocket wheels 1S und .iii off ennui diameter 011 said respective spindles; the wheei 19 preferably runningi4 infin nii inzd'h 2i.

The drive of' the needle rnd i252 eii'eeted by means of n evendi dish 22 and n connect ing rod 2li, the crunk dishV being;l mounted )n the, needle rod there is fixed u, sleeve 25 carri/ing two rollers; 26

r i I'. i

in meh i hunner i'hrri thel upper und 27. 'ihe hdm up Qi, 20 is ifuierinned on n pin {i} :rnd mfted on by :i snirniispring iodgg'ei'i in its; hong sind noi; lnhown in the dfnwingf, which fam-ing; hun Lhe iendifmr'v `i() more :nin/'nid he h' i @i che hike, up. The i i up 'iioveS in :1, eireni For ihr, gjanrpose of feeding iihrenii :for r stitch o en drawing: im stieh i morelmeid of ihn miro up is eii'eeird hy menos n f n ro "er dii colin ending with the show. erin 29 i: die nii. 'ihe rodrilii' ewperntem ih@ :mn Hi oi :i lever hd V on n, pin 53. The

inge; n, donhie rod, mofidier iii i Siidiiji lnonnrd :n :L ggjnrdn Iii?, ihr: per ni which rod inemhrr :irreohneerivsmi ini :,e hina-ge 239 enh de nde 'Lo ihe ieif, whirh horno-diy Werenhirei from doh iv n rsnringr hi :dinehed Lo l'hiA mide dii; deh Boring :den prodneed i. eeriziin :rn'ioiddz ori" friction heir/een the iower rod ineinher ibi und. the guide 25H5, wheroinr he wrighi; of (he rods :ind ihn presnre id" ihe short erin 235i of the hike up ure unzdde o produire downward moiion oi [he rod ineinin'lr. i'he rod '53 .has n ingr-i1. which in en; `d hy the :um 32 of :i hwrr rohil'irinirng; :in n di :rind 1&2'

The drive ol Yin: hice :in ridire; ,einer ne i'oiimvr;:-,ihsst hei'ere the n( h: rod admins; iis inner deed poinifn irs ridi r "T connes; into ronhui 'wih ihr :mh .'l und in .rs ii.y dow wird so ind the hiver :ii-in i' eonhiets with the, ini-1)' -ii :1nd ginsahee n prmrd the rode i'i, Iii- :in h ng.;- im ihr dnwnwnrd movement of the needle rod hiedra. ii e upper rod i homes info ieordnei, with the ihm-ii nein the miie up so that ihh; ,hd from 'cdlowinggg ihe 'iirihei lnoreineni oi [he ioiir dov. nwnrd rim .ha wreed n mmrd 'i'onii :n: i i fon iid hrrhirdizde pori i J mi in fidi hin ti. As (hr mdk: Si?, ifi onine in iin; rim Lion, (mined hy ihe spring' i-, do noi' yield,

the hilfeJ up if; :ii-opined in li ifs im. in iudl iho roller 2li on the nerd ngiwnrd moiioh oi the needle rod :renin f :omr-:s in eonhio, with the Sheri urln 52!) oi.' (he hdie up, whereupon thin` :win moves upward under die notion of lh@l roller L llldii iho needle rod l'enehes iis upper demi point'. Thinl position oi the hike up in shown in Fig. 2 in dotted lines. On

r 1f,- ijirerf ded the upward movement of the needle rod the roller 2G causes the rod 37 to yield to the lett so that this latter does not obstruct the movement of the needle rod. On the next downward motion of the needle rodthe roller 26 moves baclrthe rods 37, 38 into their lowermost position. On the furthe-r downward movement of the needle rod the short arm 29 of the take up follows the roller 26 until the roller 27 again engages the arm 31, when the actions just described are repeated. The looper is so adjusted on the shaft 17 that it engages in the thread loop at the instant the take up is at rest.

The automatic lubrication takes places as follows z-The bosses of the chain wheels 18 and 19 are made conical in such a manner that the Oil flows from the chain wheels in grooves 42 provided in the parts of the spindles 16 and 17 supported in the bearings 43 and 44. The spindles 16 and 1T are hollow and contain spirals 45 of wire or the like which conduct the oil flowing out of the grooves 42 through radial passages 46 pro vided in the spindles, through radial passages 47 to the bearings 48 and 49. The oil dripping from these bearings flows bach to the 'oil bath 21 through suitable tubes 50 and Loana/ii 51; the oil thus returned. by the tubes 50 and 51 to the oil bath 21 is distributed from said bath by the sprocket wheel 19 and chain 20, so that a perfectly automatic circulation of lubricating oil is obtained. To prevent oil trom being` thrown oHj at the bearings and 44 owing to iifentri'ugal force, cups 52 are attached to these latter, the edges of which cups project over the ends of the bosses of the chain wheels 18 and 19.

lfn a sewing` machina the combination oi? a take-up and loopcr, drive members thereA tor, and a shift-able stop independent of said drive members for positively holding said tale-up at rest upon engagement ci said looper with the threadand means actuated by said take-up drive member for shifting` said stop.

in testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

KGNRAD von KRYTYNSY.

lllitnesses JoiIANN SAnoRsnY,

AUGUST Focene. 

